EGF Receptor - Peptide Synthesis

On the other hand, methyl 2,5-dihydroxycinnamate, a tyrosine kinase inhibitor (TKI), suppressed the increase of mRNA and PGE 2 levels caused by EGF, but not that caused by TPA.

T1 - TPA enhances DNA synthesis by transiently reducing EGF receptor affinity and EGF degradation

AB - Epidermal growth factor (EGF) was reported to regulate triacyl glycerol synthesis in various cells. Linoleic acid and its metabolites were thought to modulate the signal transduction of growth factors. This study determined whether linoleic acid regulated the effect of EGF on lipid contents in human intestinal C2BBe1 cells. Confluent cells were incubated with serum-free medium (control), EGF (45 ng/mL), linoleic acid (42 μg/mL), or combined EGF (45 ng/mL) and linoleic acid (42 μg/mL) for 48 h. The results showed EGF and linoleic acid significantly increased intracellular cholesterol and triglyceride levels compared with the control and combined groups. EGF was a more potent stimulator for triacyl glycerol synthesis in C2BBe1 cells than linoleic acid. However, intracellular cholesterol and triglyceride levels did not differ between the control and combined groups. The secretion of cholesterol and triglyceride into the medium by C2BBe1 cells did not differ among four groups. Both EGF and linoleic acid strongly stimulated the expression of EGF receptor mRNA in C2BBe1 cells at 48 h compared with the control and combined groups. Therefore, EGF and linoleic acid increased triacyl glycerol synthesis in C2BBe1 cells through stimulating the expression of EGF receptor mRNA. The effect of EGF and linoleic acid on this lipogenesis was reversed in the presence of both EGF and linoleic acid by downregulating the expression of EGF receptor mRNA.


EGF/EGFR signaling pathway | Sigma-Aldrich

T1 - Synthesis and biochemical characterization of EGF receptor in a water-soluble membrane model system

N2 - The most common type of alteration of the epidermal growth factor receptor gene (EGFR) in human glioblastomas results in the synthesis of an aberrant mRNA lacking 801 bases that encode amino acids 6-273 of the receptor's extracellular domain. To study the effects of this mutation on receptor function, we have developed chinese hamster ovary cell transfectants which express the mutant EGF receptor. Comparison of wild-type and mutant receptor properties in this cell host indicates that the truncated receptor does not bind EGF or TGF-α and, consequently, DNA synthesis is not stimulated in cultures of mutant transfectants by either grown factor. However, levels of DNA synthesis determined for mutant transfectants in serum-free media are several-fold higher than those determined for corresponding cultures of wild-type transfectants. Western blot analysis with anti-phosphotyrosine antibody indicates that the mutant receptor is constitutively phosphorylated in CHO cells, and the same analysis applied to lysates of glioblastoma biopsies reveals the altered receptor is readily detectable as a phosphotyrosine protein in tumors for which there is evidence of corresponding EGFR gene and transcript alterations. In total, these results indicate that the aberrant EGF receptor synthesized in glioblastomas, and which lacks a portion of the extracellular domain necessary for ligand binding, is an activated tyrosine kinase.


has media related to Epidermal growth factor, EGF.

Because epidermal growth factor (EGF)-receptor activation is most likely critical in renal replicative repair, these studies were undertaken to assess whether triiodothyronine (T3), the most active form of thyroid hormone, may modulate EGF-induced renal proximal tubule cell proliferation by an effect on the EGF receptor.

Effect of cycloheximide on epidermal growth factor ..

Because epidermal growth factor (EGF)-receptor activation is most likely critical in renal replicative repair, these studies were undertaken to assess whether triiodothyronine (T3), the most active form of thyroid hormone, may modulate EGF-induced renal proximal tubule cell proliferation by an effect on the EGF receptor.